Since 2015, the MI* Division of Panasonic Holdings Corporation has been developing composite resins aimed at reducing the use of petroleum-derived plastics, with a focus on naturally derived cellulose fibres. 

Conventional processes typically involve dispersing pulp in water; however, when combined with resin, the subsequent drying phase requires significant energy. To address this, the company has developed an all-dry process in which pulp is directly dispersed into molten resin, eliminating the need for water. This innovation enables the incorporation of over 55% cellulose fibres into the material.

This proprietary compounding technology results in white moulding materials such as kinari, a plant-based solution aligned with circular economy principles. The high concentration of cellulose fibres allows for a wide range of colouring possibilities and, through precise moulding control, enables tonal variations without the use of added pigments – including natural browning effects within the material itself. The result is a refined, wood-like aesthetic.

At The New State of Materials, the company presents potential applications of this material in home appliance casings and everyday consumer goods, reinforcing its commitment to reducing plastic use and advancing more sustainable material solutions.

*Material Innovation